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Full-Text Articles in Physical Sciences and Mathematics
Instrumenting The Unmanned Surface Vehicle, Dorado With A Novel, Miniature Gas Chromatograph: Toward A Rapidly-Deployable, Operational Protocol For Studying Dispersion In The Ocean, John Christopher L'Esperance
Instrumenting The Unmanned Surface Vehicle, Dorado With A Novel, Miniature Gas Chromatograph: Toward A Rapidly-Deployable, Operational Protocol For Studying Dispersion In The Ocean, John Christopher L'Esperance
Link Foundation Ocean Engineering and Instrumentation Fellowship Reports
There exists a well-developed and maturing framework for understanding and predicting the circulation of water masses at scales of the world ocean down to the scales of ports and harbors. Ocean circulation models employing data-assimilative techniques, and operating in real time, can benefit from observational infrastructure established and maintained by researchers, governments, and other organizations around the globe. As an example, observations from moored instruments which facilitate the measurements of current velocities can be used to constrain or adjust the predictions made by ocean circulation models (OCM). There are, however, properties of oceanic flows which are less conducive to direct …
Relativistic Electron Avalanches As A Thunderstorm Discharge Competing With Lightning, Nicole A. Kelley, David M. Smith, Joseph R. Dwyer, Michael Splitt, Steven Lazarus, Forest Martinez-Mckinney, Bryna Hazelton, Brian Grefenstette, Alexander Lowell, Hamid K. Rassoul
Relativistic Electron Avalanches As A Thunderstorm Discharge Competing With Lightning, Nicole A. Kelley, David M. Smith, Joseph R. Dwyer, Michael Splitt, Steven Lazarus, Forest Martinez-Mckinney, Bryna Hazelton, Brian Grefenstette, Alexander Lowell, Hamid K. Rassoul
Ocean Engineering and Marine Sciences Faculty Publications
Gamma-ray ‘glows’ are long duration (seconds to tens of minutes) X-ray and gamma-ray emission coming from thunderclouds. Measurements suggest the presence of relativistic runaway electron avalanches (RREA), the same process underlying terrestrial gamma-ray flashes. Here we demonstrate that glows are relatively a common phenomena near the tops of thunderstorms, when compared with events such as terrestrial gamma-ray flashes. Examining the strongest glow measured by the airborne detector for energetic emissions, we show that this glow is measured near the end of a downward RREA, consistent with occurring between the upper positive charge layer and the negative screening layer above it. …
High-Altitude Electrical Discharges Associated With Thunderstorms And Lightning, Ningyu Liu, Matthew G. Mcharg, Hans C. Stenbaek-Nielsen
High-Altitude Electrical Discharges Associated With Thunderstorms And Lightning, Ningyu Liu, Matthew G. Mcharg, Hans C. Stenbaek-Nielsen
Aerospace, Physics, and Space Science Faculty Publications
The purpose of this paper is to introduce electrical discharge phenomena known as transient luminous events above thunderstorms to the lightning protection community. Transient luminous events include the upward electrical discharges from thunderstorms known as starters, jets, and gigantic jets, and electrical discharges initiated in the lower ionosphere such as sprites, halos, and elves. We give an overview of these phenomena with a focus on starters, jets, gigantic jets, and sprites, because similar to ordinary lightning, streamers and leaders are basic components of these four types of transient luminous events. We present a few recent observations to illustrate their main …